[package] boost/1.83.0: missing openssl requirement

[JonathanGirardeau]

Description

When I include boost/asio/ssl.hpp I get a build issue: include/boost/asio/ssl/detail/openssl_types.hpp:23:10: fatal error: openssl/conf.h: No such file or directory I think the openssl requirement should be added in boost recipe with transitive_headers=True.

Package and Environment Details

• Package Name/Version: boost/1.83.0
• Operating System+version: Linux Ubuntu 20.04
• Compiler+version: GCC 9
• Docker image: ****
• Conan version: conan 2.0.14
• Python version: Python 3.8.10

Conan profile

[settings] arch=x86_64 build_type=Release compiler=gcc compiler.cppstd=17 compiler.libcxx=libstdc++11 compiler.version=9 os=Linux

Steps to reproduce

conan build .

Logs

Click to expand log

``` In file included from /home/developer/.conan2/p/boost644a10592370a/p/include/boost/asio/ssl/context_base.hpp:19, from /home/developer/.conan2/p/boost644a10592370a/p/include/boost/asio/ssl/context.hpp:23, from /home/developer/.conan2/p/boost644a10592370a/p/include/boost/asio/ssl.hpp:18, ... /home/developer/.conan2/p/boost644a10592370a/p/include/boost/asio/ssl/detail/openssl_types.hpp:23:10: fatal error: openssl/conf.h: No such file or directory 23 | #include | ^~~~~~~~~~~~~~~~ compilation terminated. ```

[Nekto89]

does official boost installation provide separate component for asio?

[Nekto89]

I've checked https://github.com/Kitware/CMake/blob/master/Modules/FindBoost.cmake and "Prebuilt windows binaries". Asio doesn't have separate component and there is no mentioning of OpenSSL in cmake files at all. Asio headers are part of official target "Boost::headers". OpenSSL is optional dependency of asio - not every user of "Boost::headers" needs it.

[JonathanGirardeau]

Hi @Nekto89, thanks for checking. Do you think an option like with_openssl (=False by default) should be added in boost recipe to add the optional openssl requirement or do you think it is the consumer recipe that need to add openssl requirement ?